如果输入字段连接到数据库，Javascript无法获取值？(Javascript can't get value if input field connected to database?)

如果它连接到数据库，我的javascript无法获取输入字段？如果手动输入它的工作。那个诀窍呢？

这是我的HTML代码：

<html> <head> <title></title> <script type="text/javascript" src="https://code.jquery.com/jquery-3.1.0.js"></script> <script type="text/javascript"> $(document).ready(function() { setInterval(function () { $('#show').load('data.php') }, 2000); }); </script> <script> $(function() { var money = 7000; $("#show").on("change keyup", function() { var input = $(this); // show message if( input.val() > money ) $('#click').trigger('click'); }); }); </script> </head> <body> <textarea type="text" id="show" value=""></textarea> <button type="button" onclick="alert('Hello');" id="click">Click</button> </body> </html>

如果value>我的变量，则发送触发器点击。如果手动输入它的工作兄弟。任何解决方案

My javascript can't get input field if it's connected to database? if typed manually it's work. any trick for that?

Here's my html code:

<html> <head> <title></title> <script type="text/javascript" src="https://code.jquery.com/jquery-3.1.0.js"></script> <script type="text/javascript"> $(document).ready(function() { setInterval(function () { $('#show').load('data.php') }, 2000); }); </script> <script> $(function() { var money = 7000; $("#show").on("change keyup", function() { var input = $(this); // show message if( input.val() > money ) $('#click').trigger('click'); }); }); </script> </head> <body> <textarea type="text" id="show" value=""></textarea> <button type="button" onclick="alert('Hello');" id="click">Click</button> </body> </html>

if value > my variable, then send trigger click. if typed manually it's work bro. any solution?

最满意答案

您可以触发.load(url, [callback])可选回调函数中的单击：

几乎没有其他变化，你不必维护两个不同的doc ready块就足以完成工作了，所以你可以将它们组合为：

<script type="text/javascript">
  $(document).ready(function() {
    var money = 7000;
    setInterval(function() {
      $('#show').load('data.php', function() {
        if ($("#show").val() > money) {
          $('#click').trigger('click');
        }
      });
    }, 2000);

    $("#show").on("change keyup", function() {
      var input = $(this);
      // show message
      if (input.val() > money)
        $('#click').trigger('click');
    });
  });
</script>
You can trigger the click in the .load(url, [callback]) optional callback function:  
Few other changes, you don't have to maintain two different doc ready blocks one is enough to do the work, So you can combine them as:  
<script type="text/javascript">
  $(document).ready(function() {
    var money = 7000;
    setInterval(function() {
      $('#show').load('data.php', function() {
        if ($("#show").val() > money) {
          $('#click').trigger('click');
        }
      });
    }, 2000);

    $("#show").on("change keyup", function() {
      var input = $(this);
      // show message
      if (input.val() > money)
        $('#click').trigger('click');
    });
  });
</script>

更多推荐